CST Multiple Ports Issue

Hello everyone,
While simulating an antenna design in CST software, I need to use multiple Waveguide and/or Discrete Ports. Although I get all Electric Field, Far Field, Radiation Pattern, etc results for each port, I don't know how to get the total. Is anyone familiar with some way?
Thanks!

You can use post processing for it. If you want to excite the system from multiple ports you can use combine results function aswell.